scholarly journals Application and Validation of a Municipal Administrative Area Spatial Zoning Model in Village-Town System Planning

2019 ◽  
Vol 11 (7) ◽  
pp. 1855 ◽  
Author(s):  
Yujing Zhao ◽  
Hong Leng ◽  
Pingjun Sun ◽  
Qing Yuan
Keyword(s):  
Land Use Planning ◽  
Rural Areas ◽  
High Efficiency ◽  
Low Cost ◽  
Model Development ◽  
Urban System ◽  
Planning Model ◽  
System Planning ◽  
Administrative Area ◽  
Urban And Rural Areas

The overall planning of urban and rural areas is the focus of municipal administrative area (MAA) planning in the process of economic globalization, and village-town system planning is the key to the overall planning of urban and rural areas. Based on the theory of spatial equilibrium and economic logic, an objective municipal administrative area spatial zoning model (M-MSZ) was constructed in our previous study. The M-MSZ model can provide guidance in the planning of a village-town system. This paper takes a city in the south of Heilongjiang Province in China as an example and compares the M-MSZ model with six traditional MAA spatial zoning models (the urban growth boundary model, land use planning model, spatial governance zoning model, major MAA location, layout and planning model, development timing-order and zoning model, and scale and function zoning model) to verify the value and superiority of the M-MSZ model in the planning of a village-town system. The consistency Kappa values were 78.2%, 83.3%, 82.3%, 79.8%, 75.7%, and 83.9%, respectively, which means that the M-MSZ model was highly consistent with those comparison models. Meanwhile, the regression coefficient R2 is higher than that of the traditional spatial zoning models, which means that the objectivity of the M-MSZ model is higher than that of traditional models. The superiority of the M-MSZ model over the traditional MAA spatial zoning model lies not only in its capacity to grasp the core content of village-town system planning, but also in its capacity to unify the decentralized urban system planning models that are used for village-town system planning, while realizing the objectivity of a weight assignment. Its unified model structure, objective integrated model system, and high accuracy make the M-MSZ model capable of solving the key problems associated with village-town system planning, with many advantages, such as easy operation, high efficiency, good inheritance, low cost, and greater objectivity, detail, and accuracy. In addition, it can provide a reference for the development model of a MAA village-town system.

Ecological Waste Treatment and Utilization Systems on Low-Cost, Energy-Saving/Generating and Resources Recoverable Technology for Water Pollution Control in China

1991 ◽  
Vol 24 (5) ◽  
pp. 9-19 ◽  
Author(s):  
Baozhen Wang
Keyword(s):  
Pollution Control ◽  
Rural Areas ◽  
Waste Treatment ◽  
Low Cost ◽  
Fish Ponds ◽  
Receiving Waters ◽  
Recoverable Resources ◽  
Urban And Rural Areas ◽  
Rice Fish ◽  
Utilization Of Wastes

Various ecological waste treatment and utilization systems (EWTUS) available in urban and rural areas in China are described, among which are land treatment and utilization systems (LTUS), eco-pond systems mainly consisting of macrohydrophytes-growing ponds, fish ponds and duck/geese ponds, and comprehensive circulation eco–systems for the treatment and utilization of wastes in rural areas, such as semi–closed eco–system in fish ponds, “rice–fish” and “rice–azolla–fish” symbiotic systems, recycling eco–systems with methane-generating digesters as central link, and comprehensive recycling eco–systems with digesters and eco–ponds as central link. In the various EWTUS, the sewage and wastewaters and other wastes are utilized and converted into various forms of recoverable resources and/or energy, while they are being purified to good quality effluents, meeting their respective discharge standards, and hence acceptable to receiving waters.

scholarly journals Re-thinking Re-construction New Design Strategies for the Reconstruction after Natural Disasters. A Local Research Experience for a Global Topic

2019 ◽  
Author(s):  
Roberto Bianchi ◽  
Roberto Ruggiero
Keyword(s):  
Natural Disasters ◽  
Rural Areas ◽  
Design Research ◽  
Low Cost ◽  
Central Italy ◽  
Urban System ◽  
Housing Demand ◽  
Urban Systems ◽  
Research Experience ◽  
Design Strategies

The paper presents the ongoing results of a design research carried out at the School ofArchitectureandDesign” EduardoVittoria”of Ascoli Piceno(SAAD)of the university of Camerino. Thespecificobjectiveoftheresearchistodevelopaninnovativeandreplicabledesign methodology, and to experiment new design strategies devoted to the sustainable, compatible and innovative-construction after natural disasters in rural areas and low-density urban systems. The research is based on a “local-to-global” approach: it refers to Italy as a case study but it aims to achieve general results applicable in different geographical contexts. Thespecificcasestudyrelatestotheearthquakethatin2016/2017affectedasignificant area of Central Italy and that strongly hit a large part of the so called “Italian village system”, i.e. a peculiar environmental and productive urban system that is still now in real emergency. As in most of the international reconstruction experiences, this reconstruction will certainly require along process which,still today,is full of unknowns. The massive damage caused by this disastrous event, the constraints imposed by regulations and the need for and adaptation of the buildings stock to the current housing standards, exclude the possibility of applying design strategies focused on a “where it was/as it was” model. This awareness, which increases the uncertainty about the future of the ”earthquake” communities, requires an innovative approach in relation to apparently incompatible aspects: the preservation of the identity of lost places and the upgrade of building performance often explicitly required by the population and however connected to a new housing demand. In relation to worldwide territories with a high level of disaster risk, this scenario can nowadays be considered a global issue which concerns both cultural and technical aspects. The design methodology pursued is based on a scientific approach to re-construction that focuses on a “systemic” and “design to build” approach that concerns also productive and technological aspects in relation to purposes of low-cost performance, constructive simplicity, cost-effectiveness of the interventions. This approach aims also at the introduction of the lightweight building system in contexts of traditional and massive construction, according to an idea of a construction site as an “assembly point” of prefabricated parts, light and modular, with a controlled life-cycle.

scholarly journals Experimental Measurement of Rice Husk Effectiveness as an Alternative Adsorbent for Turbidity Reduction in Synthetic Water

2019 ◽  
Vol 22 (4) ◽  
pp. 329-334
Author(s):  
Noora Saad Faraj Al-Dulaimi ◽  
Samara Saad Faraj Al-Dulaimi
Keyword(s):  
Rice Husk ◽  
Rural Areas ◽  
Urban Areas ◽  
High Efficiency ◽  
Low Cost ◽  
Water Turbidity ◽  
Cheap Alternative ◽  
Quality Water ◽  
Ph Level ◽  
The Cost

Providing a clean and high quality drinking water to both rural as well as urban areas is a great challenge by itself, adding to it the large volume requirements of such water at high population areas means a very high cost for such industry because mainly of the cost of expensive commercially available adsorbent used in this process. This led inhabitants of the remote and/or rural areas to use less quality water with all its risks and health challenges. In this study, a locally collected rice husk is tested to be used as an alternative adsorbent to the expensive common commercial ones. Parameters like adsorbent dosage, initial concentration of turbidity, and pH level were tested to investigate their effects on the process. Treatment of synthetic turbid water was done after changing these parameters to measure the effect of each parameter alone and the results showed a set of parameters that can be used to achieve high efficiency of turbidity removal. The study concluded that rice husk can be used as a well cheap alternative adsorbent to reduce the river water turbidity due to its availability and low cost with a decent removal efficiency approaching 95%.

New Type of Distributed Biomass Combustion Device Necessity and Feasibility in China

2011 ◽  
Vol 383-390 ◽  
pp. 4013-4016
Author(s):  
Chang Le Pang ◽  
Li Chen ◽  
Ren Jie Dong
Keyword(s):  
Rural Areas ◽  
High Efficiency ◽  
Low Cost ◽  
Biomass Combustion ◽  
Combustion System ◽  
Human Beings ◽  
New Type ◽  
Energy Products ◽  
The Ideal ◽  
Commercial Energy

Worldwide changes in climate and environment forced us human beings to seek for alternatives to replace commercial energy products like coal and petroleum. However, there have some difficulties to promote commercial energy products in China’s rural areas and newly urbanized areas. Biomass combustion system will become one of the ideal devices for such areas in a period of time. It is necessary to develop new types of biomass combustion system consisting of gasification or Semi-Gasification and combustion units so that it can provide high efficiency and low cost for household purposes.

A New Framework of Urban and Rural Planning System in Guangdong

2011 ◽  
Vol 368-373 ◽  
pp. 1689-1692 ◽  
Author(s):  
Dong Jin Qi ◽  
Jian Yun Zhou
Keyword(s):  
Rural Areas ◽  
Local Development ◽  
Urban System ◽  
Planning System ◽  
Rural Planning ◽  
Regional Coordination ◽  
Urban And Rural Areas ◽  
British Planning ◽  
The Relationship ◽  
New Framework

As the "Urban and Rural Planning Law " had been promulgated in 2008, the paper studied the context of socio-economic development and the actual situation of urban and rural development in Guangdong Province, drawing on the experience of the British planning system, proposing the framework of urban and rural planning system as "Provincial Spatial Plan" and "Local Development Plan", which including urban system planning, master plan, detailed plan, village plan four types. The new framework will streamline the planning system, reduce the levels of planning and clear the relationship between different types of planning, contributing to regional coordination in urban and rural areas.

Managed aquifer recharge: rediscovering nature as a leading edge technology

2010 ◽  
Vol 62 (10) ◽  
pp. 2338-2345 ◽  
Author(s):  
P. Dillon ◽  
S. Toze ◽  
D. Page ◽  
J. Vanderzalm ◽  
E. Bekele ◽  
...  
Keyword(s):  
Rural Areas ◽  
Low Cost ◽  
Leading Edge ◽  
Managed Aquifer Recharge ◽  
Aquifer Recharge ◽  
Water Supplies ◽  
Water And Wastewater Treatment ◽  
Urban Hydrogeology ◽  
Urban And Rural Areas ◽  
Treated Sewage Effluent

Use of Managed Aquifer Recharge (MAR) has rapidly increased in Australia, USA, and Europe in recent years as an efficient means of recycling stormwater or treated sewage effluent for non-potable and indirect potable reuse in urban and rural areas. Yet aquifers have been relied on knowingly for water storage and unwittingly for water treatment for millennia. Hence if ‘leading edge’ is defined as ‘the foremost part of a trend; a vanguard’, it would be misleading to claim managed aquifer recharge as a leading edge technology. However it has taken a significant investment in scientific research in recent years to demonstrate the effectiveness of aquifers as sustainable treatment systems to enable managed aquifer recharge to be recognised along side engineered treatment systems in water recycling. It is a ‘cross-over’ technology that is applicable to water and wastewater treatment and makes use of passive low energy processes to spectacularly reduce the energy requirements for water supply. It is robust within limits, has low cost, is suitable from village to city scale supplies, and offers as yet almost untapped opportunities for producing safe drinking water supplies where they do not yet exist. It will have an increasingly valued role in securing water supplies to sustain cities affected by climate change and population growth. However it is not a universal panacea and relies on the presence of suitable aquifers and sources of water together with effective governance to ensure human health and environment protection and water resources planning and management. This paper describes managed aquifer recharge, illustrates its use in Australia, outlining economics, guidelines and policies, and presents some of the knowledge about aquifer treatment processes that are revealing the latent value of aquifers as urban water infrastructure and provide a driver to improving our understanding of urban hydrogeology.

Why DEWATS is Still not Popular in Vietnam?

2010 ◽  
Vol 5 (4) ◽  
Author(s):  
Viet-Anh Nguyen
Keyword(s):  
Rural Areas ◽  
Local Community ◽  
Low Cost ◽  
Wastewater Management ◽  
Limited Information ◽  
Limited Participation ◽  
Management Concept ◽  
Management Schemes ◽  
Urban And Rural Areas ◽  
Local Levels

While large centralized sanitation projects are not affordable for most cases in urban and rural areas, the only way to increase sanitation coverage, especially for the poor, is to implement low-cost alternatives with decentralized sanitation management schemes where local community, administrative authorities and private sectors are involved in the decision making as well as in the exploitation process. Despite of that, there are some reasons discussed why decentralized wastewater management concept and its application is still not widely disseminated throughout Vietnam. Among institutional and managerial aspects there are weaknesses of environmental pollution control capacity at different, especially local levels, limitations of existing Vietnamese environmental standard system, and lacking of incentive measures to encourage consultants to go for the decentralized wastewater concept, as well as to force polluters to improve their situation. In term of finance, discussed pints are low wastewater fee, and limited participation of private sector in the business. In technical aspects, there are limited information of appropriate and proven technical options for different contexts, lessons on their performance and system setting up. Besides, difficulties in the household connection and in collection network are among factors. The paper also provides some examples of decentralized alternatives implemented in different sanitation projects at different scales in Vietnam.

scholarly journals Compression Behaviour of Polypropylene Fibre Reinforced Cellular Light Weight Concrete Masonry Prism

2020 ◽  
Vol 30 (1) ◽  
pp. 145-160
Author(s):  
Ramalingam Vijayalakshmi ◽  
Srinivasan Ramanagopal
Keyword(s):  
Sustainable Development ◽  
Rural Areas ◽  
High Performance ◽  
Building Materials ◽  
Lightweight Concrete ◽  
Low Cost ◽  
Polypropylene Fibre ◽  
Clay Bricks ◽  
Structural Applications ◽  
Urban And Rural Areas

AbstractSustainable development of the built environment in developing countries is a major challenge in the 21st century. The use of local materials in the construction of buildings is one of the potential ways to support sustainable development in both urban and rural areas where burnt clay bricks are used predominantly. This work focuses mainly on the use of polypropylene micro fibers in ordinary Cellular Lightweight Concrete blocks. The main objective is to develop a high-performance fibre reinforced cellular concrete to provide a better alternative than clay bricks for structural applications of masonry. This paper presents the stress-strain behaviour of polypropylene fibre reinforced Cellular Lightweight Concrete stack bonded prisms under axial compression. Masonry compressive strength is typically obtained by testing stack bonded prisms under compression normal to its bed joint. Use of micro-fibres enhances the pre-cracking behaviour of masonry by arresting cracks at micro-scale in the post-peak region. These efforts are necessary to ensure that CLC blocks become more accepted in the world of building materials and considered as a reliable option for providing low-cost housing.

scholarly journals Photogrammetric mapping using unmanned aerial vehicle

2014 ◽  
Vol XL-1 ◽  
pp. 129-133 ◽  
Author(s):  
N. Graça ◽  
E. Mitishita ◽  
J. Gonçalves
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Rural Areas ◽  
Low Cost ◽  
Direct Determination ◽  
Aerial Images ◽  
Image Block ◽  
Exterior Orientation ◽  
Aerial Vehicle ◽  
Urban And Rural Areas ◽  
Orientation Parameters

Nowadays Unmanned Aerial Vehicle (UAV) technology has attracted attention for aerial photogrammetric mapping. The low cost and the feasibility to automatic flight along commanded waypoints can be considered as the main advantages of this technology in photogrammetric applications. Using GNSS/INS technologies the images are taken at the planned position of the exposure station and the exterior orientation parameters (position Xo, Yo, Zo and attitude ω, φ, χ) of images can be direct determined. However, common UAVs (off-the-shelf) do not replace the traditional aircraft platform. Overall, the main shortcomings are related to: difficulties to obtain the authorization to perform the flight in urban and rural areas, platform stability, safety flight, stability of the image block configuration, high number of the images and inaccuracies of the direct determination of the exterior orientation parameters of the images. In this paper are shown the obtained results from the project photogrammetric mapping using aerial images from the SIMEPAR UAV system. The PIPER J3 UAV Hydro aircraft was used. It has a micro pilot MP2128g. The system is fully integrated with 3-axis gyros/accelerometers, GPS, pressure altimeter, pressure airspeed sensors. A Sony Cyber-shot DSC-W300 was calibrated and used to get the image block. The flight height was close to 400 m, resulting GSD near to 0.10 m. The state of the art of the used technology, methodologies and the obtained results are shown and discussed. Finally advantages/shortcomings found in the study and main conclusions are presented

scholarly journals A microbial ecosystem: agricultural Jiaosu achieves effective and lasting antifungal activity against Botrytis cinerea

AMB Express ◽  
2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Yue Zhang ◽  
Youhui Gao ◽  
Zehui Zheng ◽  
Xingyao Meng ◽  
Yafan Cai ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Antifungal Activity ◽  
Botrytis Cinerea ◽  
Rural Areas ◽  
High Efficiency ◽  
Low Cost ◽  
Inhibitory Effect ◽  
Biological Agent ◽  
Microbial Ecosystem ◽  
Long Acting

AbstractSynthetic fungicides are eco-unfriendly to agriculture and the environment. Agricultural Jiaosu (AJ), which originates from organic wastes, has the potential to be a substitute for synthetic fungicides. In this study, the characteristics of AJ and its antifungal activity against Botrytis cinerea were investigated for the first time. AJ was rich in lactic acid (4.46 g/L), acetic acid (1.52 g/L), Lactobacillus (72.45%) and Acetobacter (15.23%), which was a microbial ecosystem consisting of acid-based substances (AS) and beneficial microorganisms (BM). The results of the antifungal assays suggested that B. cinerea was effectively inhibited by AJ, with the half-maximal inhibitory concentration (IC50) of 9.24%. AJ showed the strongest and most-lasting inhibitory effect compared to cell-free supernatant and microbial solution of AJ, indicating that AS and BM and their synergistic effect contributed to the antifungal activity of AJ. Two-step inhibition’ is an antifungal mode of AJ. Firstly, AS not only inhibited the pathogen directly but also provided a dominant niche for BM of AJ. Then, BM in AJ, especially Acetobacter, proliferated and metabolized acetic acid continuously. Thus, AJ achieved high-efficiency and long-acting inhibition. AJ is a promising biological agent considering its features of an eco-friendly, low-cost and easy-to-operate biological agent in rural areas.

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